18450373 has 2 divisors, whose sum is σ = 18450374. Its totient is φ = 18450372.

The previous prime is 18450359. The next prime is 18450379. The reversal of 18450373 is 37305481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18258529 + 191844 = 4273^2 + 438^2 .

It is a cyclic number.

It is not a de Polignac number, because 18450373 - 2⁹ = 18449861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18450379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9225186 + 9225187.

It is an arithmetic number, because the mean of its divisors is an integer number (9225187).

Almost surely, 2^18450373 is an apocalyptic number.

It is an amenable number.

18450373 is a deficient number, since it is larger than the sum of its proper divisors (1).

18450373 is an equidigital number, since it uses as much as digits as its factorization.

18450373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 18450373 is about 4295.3897378468. The cubic root of 18450373 is about 264.2419203096.

The spelling of 18450373 in words is "eighteen million, four hundred fifty thousand, three hundred seventy-three".